/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.math4.geometry.spherical.oned;
import org.apache.commons.math4.exception.NumberIsTooLargeException;
import org.apache.commons.math4.geometry.partitioning.Region;
import org.apache.commons.math4.geometry.spherical.oned.Arc;
import org.apache.commons.math4.util.FastMath;
import org.apache.commons.math4.util.MathUtils;
import org.apache.commons.numbers.core.Precision;
import org.junit.Assert;
import org.junit.Test;
public class ArcTest {
@Test
public void testArc() {
Arc arc = new Arc(2.3, 5.7, 1.0e-10);
Assert.assertEquals(3.4, arc.getSize(), 1.0e-10);
Assert.assertEquals(4.0, arc.getBarycenter(), 1.0e-10);
Assert.assertEquals(Region.Location.BOUNDARY, arc.checkPoint(2.3));
Assert.assertEquals(Region.Location.BOUNDARY, arc.checkPoint(5.7));
Assert.assertEquals(Region.Location.OUTSIDE, arc.checkPoint(1.2));
Assert.assertEquals(Region.Location.OUTSIDE, arc.checkPoint(8.5));
Assert.assertEquals(Region.Location.INSIDE, arc.checkPoint(8.7));
Assert.assertEquals(Region.Location.INSIDE, arc.checkPoint(3.0));
Assert.assertEquals(2.3, arc.getInf(), 1.0e-10);
Assert.assertEquals(5.7, arc.getSup(), 1.0e-10);
Assert.assertEquals(4.0, arc.getBarycenter(), 1.0e-10);
Assert.assertEquals(3.4, arc.getSize(), 1.0e-10);
}
@Test(expected=NumberIsTooLargeException.class)
public void testWrongInterval() {
new Arc(1.2, 0.0, 1.0e-10);
}
@Test
public void testTolerance() {
Assert.assertEquals(Region.Location.OUTSIDE, new Arc(2.3, 5.7, 1.0).checkPoint(1.2));
Assert.assertEquals(Region.Location.BOUNDARY, new Arc(2.3, 5.7, 1.2).checkPoint(1.2));
Assert.assertEquals(Region.Location.OUTSIDE, new Arc(2.3, 5.7, 0.7).checkPoint(6.5));
Assert.assertEquals(Region.Location.BOUNDARY, new Arc(2.3, 5.7, 0.9).checkPoint(6.5));
Assert.assertEquals(Region.Location.INSIDE, new Arc(2.3, 5.7, 0.6).checkPoint(3.0));
Assert.assertEquals(Region.Location.BOUNDARY, new Arc(2.3, 5.7, 0.8).checkPoint(3.0));
}
@Test
public void testFullCircle() {
Arc arc = new Arc(9.0, 9.0, 1.0e-10);
// no boundaries on a full circle
Assert.assertEquals(Region.Location.INSIDE, arc.checkPoint(9.0));
Assert.assertEquals(.0, arc.getInf(), 1.0e-10);
Assert.assertEquals(MathUtils.TWO_PI, arc.getSup(), 1.0e-10);
Assert.assertEquals(2.0 * FastMath.PI, arc.getSize(), 1.0e-10);
for (double alpha = -20.0; alpha <= 20.0; alpha += 0.1) {
Assert.assertEquals(Region.Location.INSIDE, arc.checkPoint(alpha));
}
}
@Test
public void testSmall() {
Arc arc = new Arc(1.0, FastMath.nextAfter(1.0, Double.POSITIVE_INFINITY), Precision.EPSILON);
Assert.assertEquals(2 * Precision.EPSILON, arc.getSize(), Precision.SAFE_MIN);
Assert.assertEquals(1.0, arc.getBarycenter(), Precision.EPSILON);
}
}